7 in 1 Emergency Survival Whistle LED Light Thermometer Multi Function Whistle for Hiking Climbing

Storage : You can put your own survival kit in it before you travel: write your name, address, telephone number, blood type, etc., so that rescuers can get to know your situation in the first place. High White LED Flashlight: Under the premise that there is no light in the field, the lighting system and LED bulb for emergency use have a life of 10,000 hours, providing enough light for you. Tinder Magnifying Glass: When there is no tinder in the wild, the magnifying glass can be focused on the principle of sunlight to refract sunlight onto dd grass and lves to produce tinder. Item Type: Emergency Survival Function Whistle Weight: 53g/1.9oz Product Material: ABS Battery Capacity: 80mAh (shipped with built in battery) Battery Type: button battery CR1220 Number of Batteries: 2